On One Space Chicken owners?

Hi. Anyone got one?
I'm tempted by the 650b version but meaningful reviews seem hard to come by online. Interested to hear what owners think, and particularly views on the "real world" tyre clearance - the Planet X site has conflicting info on this?
Cheers
L2R
PX just said in an email they'd sold more of these last week than their previous best seller, the EC-130 aero bike, so someone is buying them
I'm tempted by the 650b version but meaningful reviews seem hard to come by online. Interested to hear what owners think, and particularly views on the "real world" tyre clearance - the Planet X site has conflicting info on this?
Cheers
L2R
PX just said in an email they'd sold more of these last week than their previous best seller, the EC-130 aero bike, so someone is buying them

Titus Silk Road Ti rigid 29er - Scott Solace 10 disc - Kinesis Crosslight Pro6 disc - Scott CR1 SL - Pinnacle Arkose X 650b - Pinnacle Arkose singlespeed - Specialized Singlecross...& an Ernie Ball Musicman Stingray 4 string...
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Also worth noting that Brant is a regular contributor on that forum, he's one of the designers, very experienced in mountain biking. He made a comment along the lines of "the guys in the sales office have to be conservative on their tyre sizing". That was for a different gravel frame, but I can see how there may be different tyre sizes on their website.
I'd love one myself, look awesome.